Elektuur/Elektor piezo feedback subwoofer amp

[SSassen]

I can remember reading an article in the Dutch Elektuur magazine somewhere in the early '90s describing a project using a piezo tweeter with added weight mounted to a woofer cone to couple the actual woofer output back to the amplifier and as such compensate any non-linear behaviour etc.

Does anybody still have that Elektuur? I'd be very interested in having a copy of that article, I'd even go as far as to pay any postage fees.

Best regards,

Sander Sassen
http://www.hardwareanalysis.com

[TwoSpoons]

Urrgh! what a yukky way to measure acceleration, when there's a plethora of micromachined accelerometers out in the market . Have a look at www.freescale.com.

[moamps]

Originally posted by SSassen
.... I'd be very interested in having a copy of that article...

Hi,

go to:

http://www.mfbfreaks.nl/

then

Zelfbouw MFB info

then

Elektuur 1986 NL

Doubleclick each picture to open and then
save them on your disc.

Regards,
Milan

[peranders]

Originally posted by SSassen
I can remember reading an article in the Dutch Elektuur magazine somewhere in the early '90s describing a project using a piezo tweeter with added weight mounted to a woofer cone to couple the actual woofer output back to the amplifier and as such compensate any non-linear behaviour etc.

Does anybody still have that Elektuur? I'd be very interested in having a copy of that article, I'd even go as far as to pay any postage fees.

I have this article and I have also started a project.... long time ago. With a 5" wideband speaker it worked pretty good and the real object was 12" Sinus (Sweden) woofer. Unfortunately the project went cold.

[SSassen]

Thanks Milan et al, that was most helpful.

Best regards,

Sander Sassen
http://www.hardwareanalysis.com

[peranders]

Sander check here.